Bell
Frosties > Cornflakes
+362|7027|UK

Good evening, been busying away at this for, just over two days now and I am officially out of ideas other than 'ITS FUCKED'

I bought a Yamaha RV-3800 amplifer just over two months ago, and coupled it to a bose acoustamas series speaker system.  Worked great, the sound is fantastic and I was MORE than pleased with my purchase.  However, I then descided to replace the speakers, over the last year I have been working to finishing off a pretty mean home theatre system (I love my movies).  Can't remember the model number of the speakers right now, but I think that is negligable.

My proplem is, the rear channels are simply not working.

Now, I first tried swaping back in my bose set.  They still work.  I then Tried plugging the new speakers into my old Denon 3802 amp, they all work there (in 5.1).  Yet, when I try putting all of them into the Yamaha, and have 7.1 configured, I get no rear channel sound what so ever.  And I have checked and checked, even went through about 5 different DVD's just incase the one I was using didnt utilise much rear channel audio (if any).  And nada.

So, it cant be the speakers, since they work fine in the Denon.  It cant be the amp per say, because it can run the Bose ones fine (in 6.1).  As soon as I plug it up to 7.1, and have either a Dolby Digital EX, or DTS-ex film on, the rear simply shuts off.  Untill I am only getting the front left, front right, centre and sub woofer.

Any thoughts?  There are loads and loads of menus in the amp, that, admitedly, I havent touched yet, but surely it should work in 7.1 out the box if the film supports it?

Apologies if my wording is confusing, pretty pissed as it is, if theres any confusion in what am asking then I would happily re word it

If anyone can point out an obvious mistake I might of made, or resolution, then that would be really great.  But as I said to begin with, I have went over it time and time again, and luckily I have the means to trouble shoot.  It just seems as thought the amp doesnt like the new speakers, somehow.

Martyn
.Sup
be nice
+2,646|6931|The Twilight Zone
I don't have any DVD that supports 7.1. If you want all speakers to play i suggest using A and B speaker config (dual main front speakers). I also have a Yamaha amp but forgot if i had to do any settings changing regarding speaker setup tho i played with the settings a lot. It doesn't hurt to go trough the menu.
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max
Vela Incident
+1,652|7045|NYC / Hamburg

many amps have some sort of self-test where each of the speakers makes some sort of "pink noise" to test if they are connected properly. Also you could connect your PC to it and test from there
once upon a midnight dreary, while i pron surfed, weak and weary, over many a strange and spurious site of ' hot  xxx galore'. While i clicked my fav'rite bookmark, suddenly there came a warning, and my heart was filled with mourning, mourning for my dear amour, " 'Tis not possible!", i muttered, " give me back my free hardcore!"..... quoth the server, 404.
Freezer7Pro
I don't come here a lot anymore.
+1,447|6675|Winland

Checked the resistance of the speakers? If the resistance of the new ones is too low, the amp may be shutting them down for safety reasons.
The idea of any hi-fi system is to reproduce the source material as faithfully as possible, and to deliberately add distortion to everything you hear (due to amplifier deficiencies) because it sounds 'nice' is simply not high fidelity. If that is what you want to hear then there is no problem with that, but by adding so much additional material (by way of harmonics and intermodulation) you have a tailored sound system, not a hi-fi. - Rod Elliot, ESP
Bell
Frosties > Cornflakes
+362|7027|UK

max wrote:

many amps have some sort of self-test where each of the speakers makes some sort of "pink noise" to test if they are connected properly. Also you could connect your PC to it and test from there
You know, now that you mention it, the connection into the rear did seem a bit loose to me.  Yet, am using the same wire going into the bose (minus the 'banana' thingy) so, when I saw it I just dismissed it.  But perhaps its the actual plug that is causing a problem.  Good call, look at that in the morning.

Karma for you lads

Martyn

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